Digital BW, The Print

I bought the MIS hextone inks for my 1280. I can install them. I found
the zipped curves in the files section here. I downloaded them. 

But I'm stumped about what to do next. I know somehow I'm supposed to
get these curves into Photoshop (7.0) but I can't find out how. I
grasp the concept of how hextone inks work but the implementation is
something else. 

Can someone point me to where I find the instructions? 

Bob Michaels